BigMatrixFactor: Create a new BigMatrixFactor

In bigmemoryExtras: An extension of the bigmemory package with added safety, convenience, and a factor class

Description

Create a new BigMatrixFactor

Usage

  BigMatrixFactor(x = NA_character_, backingfile, nrow,
    ncol, dimnames = NULL, levels)

Arguments

x	scalar or matrix to be treated as character.
backingfile	character, full path to the file that will contain the data matrix
nrow	integer, number of rows in the matrix we are about to create
ncol	integer, number of columns in the matrix we are about to create
dimnames	list, list(rownames,colnames), as for a typical matrix
levels	character, as for a typical factor

Value

BigMatrixFactor

Examples

dnames = dimnames=list(letters[1:3],LETTERS[1:3])
levels=c("AA","AB","BB")
x = matrix( sample( levels, 9, replace=TRUE), ncol=3, dimnames=dnames)
ds = BigMatrixFactor(x,tempfile(),levels=levels)
ds = BigMatrixFactor(backingfile=tempfile(),nrow=3,ncol=3,dimnames=dnames,levels=levels)

Example output

Loading required package: bigmemory

bigmemoryExtras documentation built on Nov. 8, 2020, 5:17 p.m.